RE: When the Opera Mini developers break a site...
It's true that the only versions of Mini I can access easily are J2ME, but with a particular site I got as far as the VP of Client Experience, and he was racking his brain trying to remember their last update, which didn't coincide with my technical issues. On another occasion, a comic strip I read regularly suddenly stopped appearing on the page, and the site's support insisted they hadn't changed anything. I understand that the clients are no longer updated, but does that mean the server side has gone static, too? Is there such a press release?
I am not familiar with Mini's developer guide, but often note network activity when completing data in a form. One the first site above, this stopped, and when I submit the form it's as if I hadn't typed anything. I doubt there is much the site developers can do to stop Mini from "storing" form data. If I could simply get this working again, the site would likely come back to life.
FWIW, this web interface sucks.